What is this Rattle in the front of my Cat engine?

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by Cam Roberts, Jun 20, 2018.

  1. windsmith

    windsmith Road Train Member

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    Air compressors rattle like that. Just saying.
     
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  3. Cam Roberts

    Cam Roberts Road Train Member

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    My last one was rattling like you mention. It was old and it sounded like a rod knock. Have a new one on that is quiet as can be. So I know exactly what you are talking about my friend. Just put it on 3 weeks ago
     
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  4. windsmith

    windsmith Road Train Member

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    Right, but even new ones rattle when they're loaded. On most engines you can't hear it over the combustion knock.
     
  5. Cam Roberts

    Cam Roberts Road Train Member

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    Thank you. I’m off today so I’ll go start it up and pay closer attention to it. Thanks man
     
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  6. Cam Roberts

    Cam Roberts Road Train Member

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    windsmith Thanks this.
  7. Cam Roberts

    Cam Roberts Road Train Member

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    Put the new vibratech damper unit on and all that rattle noise is completely gone.
    That vibratech unit seems to be of better quality than that old cat one that I took off.
    Thank you guys for your help. Hope this thread helps someone else out in the future
     
  8. tetemadi

    tetemadi Bobtail Member

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    spsauerland, this is the same noise my engine makes. Guess I will be replacing my damper.
     
  9. Secrets67

    Secrets67 Bobtail Member

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    Same. Thank you.
     
  10. 541blownchevy

    541blownchevy Bobtail Member

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    Have you checked the followers they lose the bearings on the rollers eventually cause block damage if let go.
     
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